17results about How to "Brightness adjustable" patented technology

The invention discloses a display device and a display control method, a display panel comprises a plurality of sub-pixels, each sub-pixel comprises a light emitting device, a driving unit and a reset unit, the driving unit is configured to drive the light emitting device to emit light, and the reset unit is configured to transmit a reset signal to an anode of the light emitting device. And the anode potential of the light-emitting device is reset. The adjustment control module adjusts the voltage of the reset signal according to at least one of the refresh frequency of the display panel, the accumulated working time of the display panel and the temperature of the environment where the display panel is located so as to adjust the light-emitting time of each light-emitting device in the current frame, and therefore adjustment of the light-emitting brightness of the light-emitting devices is achieved. Moreover, the brightness of the sub-pixels displaying the low-gray-scale content can be obviously adjusted by adjusting the light-emitting duration of the light-emitting device, so that the low-gray-scale brightness deviation can be improved.

This application provides a display panel and a display device. The display panel includes a first display area and a second display area. The display panel includes a substrate, a first light-emitting unit, and a second light-emitting unit. The first light-emitting unit is disposed on one side of the substrate within the first display area. The first light-emitting unit includes m light-emitting layers, where m is an integer greater than or equal to 2. The m light-emitting units include a first light-emitting layer and a second light-emitting layer. The orthographic projections of the first light-emitting layer onto the substrate and the orthographic projections of the second light-emitting layer onto the substrate at least partially overlap. The second light-emitting unit is disposed on one side of the substrate within the second display area. The second light-emitting unit includes n light-emitting layers, where n is an integer greater than or equal to 1. The effective light-emitting area of ​​the first light-emitting unit is different from that of the second light-emitting unit. Embodiments of this application can improve the brightness uniformity of different areas and improve the display effect.

This invention provides a multicolor light source based on an anisotropic conductive film, comprising: a plurality of light-emitting panel packages, wherein each light-emitting panel package includes: a light-emitting panel configured to emit light; a lens holder configured to support a coupling lens and having a window, wherein each window is aligned with at least one light-emitting panel; and a coupling lens disposed on the lens holder and configured to transmit light emitted by the light-emitting panel; a circuit board configured to electrically connect the light-emitting panel to a motherboard; and a motherboard bonded to and electrically connected to the circuit board via the anisotropic conductive film. This invention allows the use of multiple monochromatic light-emitting panels to provide a mixed-color light source, such as a white light source, while also reducing the size of the light source or display.

The utility model discloses a zoom projection lens which comprises a first lens assembly, a second lens assembly, a third lens assembly, a diaphragm, a fourth lens assembly and a fifth lens assembly which are sequentially arranged along a direction from an object space to an image space. A full-group linkage zoom design is adopted, and the first lens assembly is set as a zoom group for changing the focal length of the projection lens; the second lens assembly, the third lens assembly, the fourth lens assembly and the fifth lens assembly are arranged to be a compensation group used for offsetting the image surface position change caused by the movement of the zoom group. When zooming is carried out from the telephoto end to the wide-angle end, the distance between the second lens assembly and the third lens assembly is gradually increased. According to the utility model, the space occupied by the lens is reduced, so that the lens can adapt to the working condition of a compact installation space, the lens can maintain excellent imaging performance at different focal lengths within the working temperature range of a special application scene, and the flexible adaptability of the zoom projection lens is improved. The utility model also provides a projection system.

The invention relates to display equipment and an image display method, and relates to the technical field of display equipment. The display apparatus includes a display, a backlight assembly, and a controller. Wherein the backlight assembly comprises a plurality of backlight subareas, and each backlight subarea comprises a plurality of color backlight sources; the controller is respectively coupled with the display and the backlight assembly, and is configured to determine a target color value to be displayed in the display by each pixel in an input image; obtaining a compensation image of the input image and backlight information of each backlight partition corresponding to the input image according to the target color value and the light transmittance information of the display; and controlling the display to display the compensation image, and adjusting the brightness of the color backlight source in each backlight subarea according to the backlight information of each backlight subarea. The image display effect of the display equipment can be improved.

The invention provides an energy-saving lighting system. The energy-saving lighting system comprises a plurality of transformer-free light-emitting elements, a microprocessor, a control unit, at least one sensor and a power supply, the control unit is electrically connected with the microprocessor so as to generate a control signal and transmit the control signal to the microprocessor, the sensor is electrically connected with the microprocessor and has a sensing range, the sensor generates a sensing signal when detecting that an object moves in the sensing range, and the control unit is electrically connected with the microprocessor and transmits the sensing signal to the microprocessor. And the sensing signal is transmitted to the microprocessor. The power supply is electrically connected with the microprocessor and the light-emitting elements, and the microprocessor generates an adjusting signal according to the control signal or the sensing signal so as to adjust the output power of the power supply and the brightness of the light-emitting elements.

The invention discloses a perimeter device and a view detection method, and relates to the technical field of medical detection.The perimeter device comprises a shell, a light source, a digital micromirror device, an imaging unit, an image acquisition unit and a controller; the digital micro-mirror device is arranged in the shell and is used for receiving light emitted by the light source and then generating an optical stimulation pattern; the imaging unit is installed in the shell and used for projecting the optical stimulation pattern to the eye fundus of the human eye for imaging; the image acquisition unit is mounted in the shell and is used for acquiring image data of human eyes; the controller is electrically connected with the image sensor and the digital micro-mirror device and used for calculating the rotation angle of the eyeball according to the image data of the human eyes and adjusting the position, where the optical stimulation graph is generated, on the digital micro-mirror device according to the rotation angle of the eyeball. And the image of the optical stimulation pattern projected to the eye fundus of the human eye through the imaging unit moves along with the eyeball.

The utility model relates to the technical field of LED power supplies, and discloses an LED constant current power supply of an integrated controller, which comprises a shell and a circuit board, the circuit board is arranged in the shell, and a control panel is arranged on the front side of the shell. The control panel is electrically connected with the circuit board, and the circuit board is provided with an input port, an output port, an AC-DC conversion circuit, a power supply circuit, a constant-current DC-DC dimming unit, a control unit and a panel input control circuit. The input port is electrically connected with the input end of the AC-DC conversion circuit, and the output end of the AC-DC conversion circuit is electrically connected with the input end of the constant-current DC-DC dimming unit and the input end of the power supply circuit. The output end of the constant-current DC-DC dimming unit is electrically connected with the output port, and the control panel is electrically connected with the control unit through the panel input control circuit. The constant-current DC-DC dimming unit adjusts output current under the control of the control circuit, and the power supply circuit is used for supplying power to the control unit. The LED constant-current power supply is convenient to install, and the installation and use experience of a terminal user can be improved.

This utility model relates to the field of temperature compensation technology and discloses a temperature-compensated LED lighting application circuit with stable light source, including a temperature detection circuit (120) for acquiring the temperature signal generated when the LED beads are working, a main control module (MCU) and a graded dimming circuit (130). The main control module (MCU) is used to receive the temperature signal and output a PWM signal according to the temperature signal; the graded dimming circuit (130) is used to receive the PWM signal; the main control module (MCU) adjusts the duty cycle of the output PWM signal according to the feedback temperature signal to control the graded dimming circuit (130) to dim the LED beads.

The application discloses a transducer device capable of monitoring water bag coupling degree and a control method thereof. The transducer device comprises a transducer module, a control module, an auxiliary light source module and a coupling monitoring module. The control module is connected with the auxiliary light source module and the coupling monitoring module. The transducer module is independent and not connected with other modules. The control module is provided with an indicator lamp for prompting the coupling state of the current water bag. The transducer module comprises a transducer, a water tank and a water bag. The water bag serves as a medium between the transducer and a target after being filled with medium liquid. The control module comprises a control center unit and a man-machine interaction unit. The auxiliary light source module comprises a driving unit and an LED lamp unit. The application adopts the auxiliary light source module as a means for compensating for the missing spectral characteristics of ambient light and enhancing the sensitive spectral range of the sensor, and provides two control modes of manual and motor automatic, further increases the reliability of the coupling degree judgment and the use compatibility of the device.

The invention discloses a medical image viewing device and aims to provide a medical image viewing device which is convenient to operate, reliable in fixation and excellent in viewing effect, the medical image viewing device comprises a supporting base, an adjusting support and a viewing device body, and the viewing device body comprises a shell, a light source module and a viewing screen, an observation window corresponding to the observation screen is formed in a shell cover at the side end of the shell, a gap groove used for inserting a film is formed between the observation window and the observation screen, and a clamping device surrounding the observation screen is further arranged on the shell. Automatic guiding, flexible tight fixing and in-place detection during film insertion are achieved, the light source module adopts the combination of an LED light bar and a diffusion plate, and the uniformity of backlight on the observation screen is ensured.

This disclosure provides embodiments of a method, apparatus, electronic device, and computer-readable medium for dynamically adjusting the brightness of an infrared lamp in a wireless camera. One specific implementation of the method includes: controlling the wireless camera to turn on its infrared lamp according to a first preset duty cycle threshold and to capture a scene image; determining the exposure value of the wireless camera when capturing the scene image; adjusting the brightness of the infrared lamp based on the scene image, the exposure value, and a preset exposure value range, wherein the adjustment involves adjusting the brightness of the infrared lamp to the minimum brightness required to meet the shooting conditions; and, in response to determining that the exposure value of the wireless camera corresponding to the adjusted infrared lamp meets the preset exposure value condition, determining that the infrared lamp brightness adjustment is complete, and controlling the wireless camera to continue capturing images. This implementation can extend the standby time of the wireless camera.

This application discloses a pixel driving circuit and a display device, relating to the field of display technology. The pixel driving circuit proposed in this application includes a first transistor, a first capacitor, a second capacitor, a driving transistor, a second transistor, and a light-emitting element. This application enables the adjustment of the brightness of the light-emitting element by providing an incremental voltage related to the dimming voltage to the source of the driving transistor when the first transistor is in a conducting state, the second transistor is in a cut-off state, and a dimming signal line provides a dimming voltage. This causes the second voltage stored in the first capacitor to be related to the data voltage and the dimming voltage, thereby adjusting the output current provided by the driving transistor during the light-emitting period based on the potential difference between the gate and source of the driving transistor. Thus, this application enables precise adjustment of the display brightness of the display device, improving its display performance.

The utility model relates to the technical field of hair driers, in particular to a hair drier with a power-off anti-scald prompt function, which comprises a hair drier body, a fan component and a heating component, the fan component is mounted in the body and drives air to enter from an air inlet of the body, the air is accelerated in an airflow channel in the body, and the heating component is heated by the fan component. The formed high-speed airflow is blown out from the air outlet; the heating part is mounted in the airflow channel in the body and is used for heating high-speed airflow, so that high-temperature air with a certain temperature is blown out from the air outlet; the energy supply assembly and the identification assembly are electrically connected with each other, the energy supply assembly provides operation power for the identification assembly, and the identification assembly sends out anti-scald prompt information. In conclusion, the utility model provides a hair drier power-off anti-scald prompting scheme which is safe, reliable, good in prompting effect, simple in structure and lower in cost, has remarkable beneficial effects, can effectively solve the problems in the prior art, and has higher practical value and market competitiveness.

This utility model discloses an automatic measuring instrument for eyeglass fitting, including a base, a lifting column mounted on the base, an operating screen mounted on the lifting column, a data acquisition device mounted above the operating screen, and a central controller located within the operating screen. The central controller is signal-connected to the data acquisition device, the operating screen, and the lifting column. The operating screen and the data acquisition device move up and down with the lifting column. A subject position area is provided facing the operating screen. The data acquisition device includes a mounting base and a camera component mounted on the mounting base. The operating screen has a front display area, a left display area, a right display area, and a front / back position adjustment display area. The front display area includes a front facial contour area and a frame contour area within the front facial contour area. The front / back position adjustment display area is used to indicate the front / back direction required for the subject's adjustment. This device uses the camera component to identify and acquire facial data from the subject in three directions, thereby automatically generating eyeglass fitting parameters.

The embodiment of the present application provides a kind of LED screen brightness adjusting method, device, system and electronic equipment.In the present embodiment, the screen brightness of LED screen is adjusted by target current gain and target Gamma value together, reduces the Gamma value adjustment range, reduces the situation that the contrast of screen is lost caused by the method of adjusting only Gamma maximum value to the brightness of LED screen, realizes the adjustment to screen brightness in the case where the contrast of screen is basically unchanged, improves screen display effect.